Country in E Asia, bordered to the N by North Korea, E by the Sea of Japan, S by the E China Sea, and W by the Yellow Sea. government Under the 1987 constitution, executive power is held by the president, who is elected directly by popular vote. The president is restricted to one five-year term of office, and governs with a cabinet (state council) headed by a prime minister. Legislative authority resides in the single-chamber, 299-deputy national assembly Kuk Hoe, 224 of whose members are directly elected for four-year terms by universal suffrage in single-member constituencies, and the remainder of whom are appointed in accordance with a formula designed to reward the largest single assembly party. The assembly has the authority to impeach the president and to override presidential vetoes. There is also a nine-member constitutional court, and guarantees of freedom of speech, press, assembly, and association are written into the constitution. The dominant party is the Democratic Liberal Party (DLP), which has strong support among the business community and the military. The main opposition party is the Party for Peace and Democracy (PPD) led by Kim Dae Jung and based mainly in the underdeveloped SW region of Cholla. history For early history, see Korea, history. The Republic of Korea was formed out of the zone south of the 38th parallel of latitude which was occupied by US troops after Japan's surrender 1945. The US military government controlled the country until, following national elections, an independent republic was declared 1948. Dr Syngman Rhee, leader of the right-wing Liberal Party, was the nation's first president in a constitution based on the US model. To begin with, the republic had to cope with a massive influx of refugees fleeing the Communist regime in the North; then came the 1950-53 Korean War. President Syngman Rhee, whose regime had been accused of corruption, resigned 1960 as a result of student-led disorder. A new parliamentary-style constitution gave greater power to the legislature, and the ensuing political instability precipitated a military coup led by Gen Park Chung-Hee 1961. A presidential system of government was re-established, with Gen Park elected president 1963, and a major programme of industrial development began, involving government planning and financial support. This programme, utilizing the nation's plentiful supply of well-educated and industrious workers, was remarkably successful, with rapid industrial growth during the 1960s and 1970s as South Korea became a major exporter of light and heavy industrial goods. Opposition to the repressive Park regime mounted during the 1970s. In response, martial law was imposed and in 1972 a new constitution, strengthened the president's powers. A new clampdown on political dissent, launched 1975, was partially relaxed for the 1978 elections, but brought protests 1979 as economic conditions briefly deteriorated. President Park was assassinated later that year by the chief of the South Korean Central Intelligence Agency, and martial law was reimposed. An interim government, led by former prime minister Choi Kyu-Hah, introduced liberalizing reforms, releasing opposition leader Kim Dae Jung 1980. However, as anti-government demonstrations developed, a new dissident clampdown began, involving the arrest of 30 political leaders, including Kim Dae Jung. After riots in Kim's home city of Kwangju, President Choi resigned 1980 and was replaced by the leader of the army, Gen Chun Doo-Hwan. A new constitution was adopted and, after Chun Doo-Hwan was re-elected president 1981, the new Fifth Republic was proclaimed. Under President Chun economic growth resumed, but internal and external criticism of the suppression of civil liberties continued. Cautious liberalization was seen prior to the 1985 assembly elections, with the release of many political prisoners and the return from exile of Kim Dae-Jung. The opposition parties emerged in a strengthened position after the 1985 election and proceeded to launch a campaign for genuine democratization that forced the Chun regime to frame a new, more liberal constitution, which was adopted after a referendum Oct 1987. The ensuing presidential election was won by the ruling party's candidate, Roh Tae Woo, amid opposition charges of fraud. He took over Feb 1988, but in the national assembly elections Apr 1988 the ruling Democratic Justice Party (DJP) fell well short of an overall majority. Only in Feb 1990, when the DJP merged with two minor opposition parties to form the Democratic Liberal Party (DLP), was a stable governing majority secured. The new coalition declared its in ention of amending the constitution to replace the presidential executive system with a parliamentary one, led by a powerful prime minister drawn from the majority grouping within the national assembly, moving South Korea's political system closer to Japan's model. Since 1953 the constant threat of invasion from the North has been a key factor in South Korean politics, helping to justify stern rule (there were over 800 political prisoners in August 1989). South Korea has devoted large resources to modernizing its armed forces, which are supported in addition by US troops.